Scanning method using a plurality of beams and apparatus therefo

Details Scanning method using a plurality of beams and apparatus therefo Scanning method using a plurality of beams and apparatus therefo

1981-12-04

1984-01-03

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

350 68, H01J 314

Patent

active

044244428

ABSTRACT:
A scanning method for scanning a scanned surface simultaneously by a plurality of beam spots in which each beam spot passing through light beam detecting means provided outside the requisite scanned area of the scanned surface, to detect the time when each beam spot begins the scanning of the requisite scanned area, is focused with respect to the scanning direction of the beam spot and defocused with respect to a direction orthogonal to the scanning direction.

REFERENCES:
Hayes, "IBM Technical Disclosure Bulletin", Feb. 1974, pp. 2826-2828.

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